/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineFriendsInterface.h
virtual [FDelegateHandle](API\Runtime\Core\Delegates\FDelegateHandle) AddOnFriendsChangeDelegate_Handle ( int32 LocalUserNum, const [FOnFriendsChangeDelegate](API\Plugins\OnlineSubsystem\Interfaces\FOnFriendsChangeDelegate) & Delegate )